Ok. Gotcha.

My point on the Palmer plans is that he is notorious for underestimating the weight of his designs and anyone I have communicated with that used his recommended engine sizes have had to replace them with larger engines. My OV10 Bronco had a target weight of 19 pounds 11.58 ounces and indicated that it would fly on 2 .90 4 strokes. If (and that's a big if) you could build the airplane at 20 pounds then the 90s would have been ok. Mine will weight about 35 pounds and will be powered with a pair of 26cc MVVS gassers. There will be no runway creep at that weight.

The C130 will weigh more than the target weight of 22 pounds so I am just trying to give anyone planning on building one of these big guys that they will need to plan on more power.